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Diffstat (limited to 'unix/os/doc/zzrwmt.hlp')
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diff --git a/unix/os/doc/zzrwmt.hlp b/unix/os/doc/zzrwmt.hlp new file mode 100644 index 00000000..b771b506 --- /dev/null +++ b/unix/os/doc/zzrwmt.hlp @@ -0,0 +1,31 @@ +.help zzrwmt May84 "System Interface" +.ih +NAME +zzrwmt -- rewind magtape +.ih +SYNOPSIS +.nf +zzrwmt (chan, status) + +int chan # OS channel of magtape +int status +.fi +.ih +DESCRIPTION +A rewind of the magnetic tape opened on channel \fIchan\fR is initiated. +.ih +RETURN VALUE +ERR is returned if the tape is offline or if \fIchan\fR is illegal. +OK is returned if the operation is successful. +.ih +NOTES +The rewind is not guaranteed to be asynchronous. There is no wait primitive +for the rewind operation; it is assumed that the host driver or the kernel +will automatically suspend any further tape motion commands issued before +the rewind is completed. If the host system does not have the ability to +asynchronously rewind a magtape then \fBzzrwmt\fR is equivalent to a call +to \fBzzopmt\fR to open file 1 on a tape. +.ih +SEE ALSO +zzopmt, zfiomt +.endhelp |